Electro medical apparatus



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T. R. TEN BROEGK.

ELECTRO MEDICAL APPARATUS.

No. 377,872. Patentb. 14, 1888".

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T. R. TEN BROECK. ELECTRO MEDICALv APPARATUS.

150; 377,872.. Patented Peb. 14, 1888.

'UNITED STATES PATENT Ormes.

THEODORE It. TEN BROEOK, OF NEW YORK, N. Y., ASSIGNOR TO THE GAL- VANO-FARADIO MANUFACTURING COMPANY, OF SAME PLACE.

ELECTRO-MEDICAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 377.872, dated February 14, 1888.

Application filed July 23, 1887.

To all whom z5 may concern:

Be it known that I, THEODORE R. TEN BROEOK, a citizen ofthe United States, resid- I ing at New York, county and State of New York, have invented certain new and useful Improvementsin Electro-Medical Apparatus, of which the following is a specification.

In electromedical apparatus capable of producing either a continuous galvanic current, an interrupted galvanic current, or an induced to-and-fro current, a separate helix actuating a make-and-break device has been employed to cause the interruptions in the galvanic current, said extra helix being energized by an auxiliary battery. By my invention this is accomplished without the use of the extra automatic circuit-breaker and auxiliary battery, my said invention consisting of novel connections made between the battery, the primary and secondary coils of the usual electro-magnetic make-and-break device or inducl torium,and the various binding-posts to which the body electrodes are attached, as will be fully hereinafter described in referring to the accompanying drawings. Besides being able to produce continuous galvanic, interrupted galvanic, and induced to-and-fro currents at pleasure, simply by the rearrangement of the connections of apparatus heretofore used for the production of induced to-and-fro currents only, I am enabled with vthe same apparatus to produce an electric current of different conditions or having different properties from any electric current heretofore used for medical purposes-viz., a remittent galvanic currcnt-that is, a current flowing continuously in one direction, but periodically increasing and decreasing in quantty.

In the accompanying drawings, Figure l represents a top View of the apparatus complete. Fig. 2 is a diagram view showing the various parts ofthe apparatus and connections, and Figs. 3 to 6 are diagrams showing the different sources of currents and combinations of currents obtainable.

To the top plate, a, of insulating material, are secured the various parts of the apparatus. This plate forms the cover of the box b,which contains a battery of twelve cells, more or less, `joined together in series, the plugs c c of the Serial No. 245,041. (No model.)

circular switch being the terminals of the connections of adjoining cells, any one or any number of which may be included in circuit with the apparatus by means of the contactkeys d and el. This universal circular switch and arrangement of battery-cells therewith, by which the strength of the electric current may be varied at pleasure, is old and well understood, so that it is unnecessary here to enter further into the details of the same, the battery in all of the diagram views being represented by lincs e, in the usual manner.

The electro-magnetic make-and-break device or inductoriumfis of the usual construction, consisting of an iron core, g, primary wire h, secondary wire i, tubular metal shield j, placed between the coils of wire h and and by means of which, according to its position in relation to the coils, the intensity of induction effects in the secondary coilz' is varied. The springacting armature k is carried by the post Z, and the post mis provided with a screw, n, with which the spring k of the armature makes contact when the armature is relieved of the influence of the magnetism of the core g.

There are five binding-posts, o; p, q, 1', and s, to which the hand or body terminals may be attached. The post o is connected to one terminal of the battery e or one end of the cells contained between the keys d and d of the circular switch, the other terminal of the battery or other end of said cells being joined to the post p and to one end of the primary coil h through the medium of the key t and contactplug a. The other end of the primary coil h is joined to the binding post r, which in turn is joined to the armature-carrying post l. The contact-screw a, through, the medium of the post m, is connected to the binding-posts o and q. The ends of the secondary coil e' are connected to the binding-posts r and s, respectively.

For convenience of use, the binding-posts 0 placed between them, q and r by the word Primary, and r and s by the word Secondary.77 Vhen it is desired to treat a paand p are indicated by the word Galvanic77 IOO from the plug u, as shown at Fig. 2. This is one of the ve Aconditions under which my apparatus is adapted to be used. In all of the other fur the key tis placed on the plug u, as

shown in Fig. l. Said key is omitted from the diagram views 8 to 6, as are also all parts not in use or required, thereby avoiding confusion in describing the operations of the apparatus illustrated by these views.

The second condition f the apparatus, or the one by which a remittent galvanic current is produced, is when the patient is included between the binding-posts o and p, and the primary coil h, spring k', and screw n form a circuit around the posts o and p, as shown at Fig. 3. In this case the current is momentarily divided between the working-circuit and primary coil circuit, the quantity flowing through each circuit being inversely as their respective resistances. ture 7c is attracted toward the core g the primary-coil circuit is broken at k u, the whole of the current then flowing through the working-circuit. These actions take place periodically as the primary-coil circuit is opened and closed at k n. As far as I am aware, this is entirely a new form or condition of electric current applied for therapeutic purposes, and

cannot be produced by any other electro-medical apparatus, and is believed to produce in certain cases beneficial effects unattainable by other means, whileat the same time retaining all of the advantages derivable from an interrupted galvanic current. Another effect is had when the patient is included between the binding-posts g and s, as shown at Fig. t, the current then being alternately divided between the working-circuit comprising the primary coil h, the secondary coil t', and the patient, and the circuit comprising the primary coil h, spring 7c, and screw a, or wholly passing through the working-circuit.

To treat the patient as with an interrupted galvanic current, the connections are made with the binding -posts q and r, as shown at Fig. 5,the patient then being periodically virtually cut out of the circuit by the shunting of the current through the short circuit from r to m when the spring k touches the screw a.

The secondary or induced to-,and-fro current is had when the patient is placed between the posts 1' and s, as shown in Fig. 6, the batterycircuit,with the primary coil h included therein, being opened and closed at 7c n. High-tension currents are induced in the secondary coil z and act on the patient included therein.

From the foregoing it will be seen that all As soon as the arma.

of the effects obtainable fromapparatus of this class heretofore made, and in which are used two batteries, two circuit-breakers, and an induction-coil,aan be obtained by the use of my improved electric medical apparatus, which embodies one battery and one indnctorium only,and that other new and useful effects are produced not before attainable by apparatus of this class.

What I claim, and desire to secure by Letters Patent, is-

l. In an electro-medical apparatus, in coinbination, a source of electricity, connections for forming a closed working-circuit therewith, andan electro-magnetic make-and-break device included in a shunt-circuit around the closed circuit, whereby a remittent galvanic current is caused to flow through said closed circuit. I

2. In an electro-medical apparatus, in combination, a source of electricity, a closed circuit,including the primary coil ofau inducteriuin and the working-circuit, and a shuntcircuit around the working-circuit, including the make-and-break device.

3. In an electro-medical apparatus, in com bination, the battery e, the conlactpoint a of the make-and-br'eak device connected to one terminal of the battery, the armature 7c, connected to the post r, the primary coil 7L of thc inductorium g, connected at one end to the post r and at the other end to the battery, the secondary coil t', connected to the posts r ands, the post q,joined to the contact-point a, and the working-circuit connected to the posts s and g, substantially as set forth.

4. In an electro-medical apparatus, in combination, the battery e, binding-posts p ando, connected thereto, switch t, connected to one end of the battery, the contact-point n of the make-and-break device connected to the other end of the battery, the armature-spring 7c,connected to the post r, the primary coil l@ of the inductorium j', connected at one end to the post r, the contact-plug rejoined to the other end 0f the primary coil, the secondary coil of the inductorium connected at one end to the post 1^,the post s,joined to the other end of the secondary coil,and the post q,connected to the contact-point a, substantially as set forth.

Signed at New York, county and State of New York, this 13th day of July, 1887.

THEODORE R. TEN BROECK.

In presence of J AMES A. HUDSON, J os. S. MICHAEL.

IOO 

